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Java > Open Source Codes > org > objectstyle > cayenne > dba > sybase > SybaseAdapter


1 /* ====================================================================
2  *
3  * The ObjectStyle Group Software License, version 1.1
4  * ObjectStyle Group - http://objectstyle.org/
5  *
6  * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
7  * of the software. All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
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17  * notice, this list of conditions and the following disclaimer in
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21  * 3. The end-user documentation included with the redistribution, if any,
22  * must include the following acknowlegement:
23  * "This product includes software developed by independent contributors
24  * and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse
29  * or promote products derived from this software without prior written
30  * permission. For written permission, email
31  * "andrus at objectstyle dot org".
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34  * or "Cayenne", nor may "ObjectStyle" or "Cayenne" appear in their
35  * names without prior written permission.
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37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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48  * SUCH DAMAGE.
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51  * This software consists of voluntary contributions made by many
52  * individuals and hosted on ObjectStyle Group web site. For more
53  * information on the ObjectStyle Group, please see
54  * <http://objectstyle.org/>.
55  */
56 package org.objectstyle.cayenne.dba.sybase;
57
58 import java.sql.PreparedStatement JavaDoc;
59 import java.sql.SQLException JavaDoc;
60 import java.sql.Types JavaDoc;
61
62 import org.objectstyle.cayenne.access.types.ByteArrayType;
63 import org.objectstyle.cayenne.access.types.ByteType;
64 import org.objectstyle.cayenne.access.types.CharType;
65 import org.objectstyle.cayenne.access.types.ExtendedTypeMap;
66 import org.objectstyle.cayenne.access.types.ShortType;
67 import org.objectstyle.cayenne.dba.JdbcAdapter;
68 import org.objectstyle.cayenne.dba.PkGenerator;
69
70 /**
71  * DbAdapter implementation for <a HREF="http://www.sybase.com">Sybase RDBMS</a>.
72  *
73  * @author Andrei Adamchik
74  */
75 public class SybaseAdapter extends JdbcAdapter {
76
77     /**
78      * Returns word "go".
79      *
80      * @since 1.0.4
81      */
82     public String JavaDoc getBatchTerminator() {
83         return "go";
84     }
85     
86     /**
87      * Installs appropriate ExtendedTypes as converters for passing values
88      * between JDBC and Java layers.
89      */
90     protected void configureExtendedTypes(ExtendedTypeMap map) {
91         super.configureExtendedTypes(map);
92
93         // create specially configured CharType handler
94 map.registerType(new CharType(true, false));
95
96         // create specially configured ByteArrayType handler
97 map.registerType(new ByteArrayType(true, false));
98
99         // address Sybase driver inability to handle java.lang.Short and java.lang.Byte
100 map.registerType(new ShortType(true));
101         map.registerType(new ByteType(true));
102     }
103
104     /**
105      * Creates and returns a primary key generator.
106      * Overrides superclass implementation to return an
107      * instance of SybasePkGenerator.
108      */
109     protected PkGenerator createPkGenerator() {
110         return new SybasePkGenerator();
111     }
112
113     public void bindParameter(
114         PreparedStatement JavaDoc statement,
115         Object JavaDoc object,
116         int pos,
117         int sqlType,
118         int precision)
119         throws SQLException JavaDoc, Exception JavaDoc {
120
121         // Sybase driver doesn't like CLOBs and BLOBs as parameters
122 if (object == null) {
123             if (sqlType == Types.CLOB) {
124                 sqlType = Types.VARCHAR;
125             }
126             else if (sqlType == Types.BLOB) {
127                 sqlType = Types.VARBINARY;
128             }
129         }
130
131         super.bindParameter(statement, object, pos, sqlType, precision);
132     }
133 }
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